Table 1.
Baseline Characteristics of the Study Participants
| Patients,n | 4940 |
|---|---|
| Age,years,mean ± SD | 61.4 ± 10.3 |
| Male(%) | 2380 (48.2) |
| Indication(%) | |
| Screening, Surveillance, Diagnostic | 4186 (84.7) |
| For polypectomy | 314 (6.4) |
| For ESD | 440 (8.9) |
| Time of day colonoscopy performed(%) | |
| Morning | 1236 (25.0) |
| Afternoon | 3704 (75.0) |
| Participating Endoscopists(%) | |
| Senior | 1575 (31.9) |
| Intermediate | 2063 (41.8) |
| Junior | 1302 (26.3) |
| Total BBPS score(%) | |
| 0–3(inadequate bowel preparation) | 101 (2.1) |
| 4–5(poor bowel preparation) | 885 (17.9) |
| 6(fair bowel preparation) | 1199 (24.3) |
| 7–8(good bowel preparation) | 2381 (48.2) |
| 9(excellent or perfect bowel preparation) | 374 (7.6) |
| Air bubble score(%) | |
| 0(no air bubble) | 1693 (34.3) |
| 1(minimal bubbles) | 1824 (36.9) |
| 2(moderate amount of air bubbles) | 984 (19.9) |
| 3(large amount of air bubbles) | 439 (8.9) |
| Colonoscopic findings(%) | 2115 (42.8) |
| Adenoma | 1231 (24.9) |
| Advanced adenoma | 476 (9.6) |
| Cancer | 104 (2.1) |
| Inflammatory bowel disease. | 100 (2.0) |
| Diverticula | 93 (1.9) |
| Others | 111 (2.2) |